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174 commits

Author SHA1 Message Date
Subv
2e78c05d91 Kernel/Thread: Allow specifying which process a thread belongs to when creating it. 
Don't automatically assume that Thread::Create will only be called when the parent process is currently scheduled. This assumption will be broken when applets or system modules are loaded.
 2017-09-26 17:40:49 -05:00
MerryMage
6b8ad273fc memory: Add GetCurrentPageTable/SetCurrentPageTable 
Don't expose Memory::current_page_table as a global.
 2017-09-24 22:42:42 +01:00
B3n30
ccdc31ca9f Merge pull request #2842 from Subv/switchable_page_table 
Kernel/Memory: Give each process its own page table and allow switching the current page table upon reschedule
 2017-09-15 22:41:45 +02:00
Subv
9200465e55 Kernel/Threads: Don't clear the CPU instruction cache when performing a context switch from an idle thread into a thread in the same process. 
We were unnecessarily clearing the cache when going from Process A -> Idle -> Process A, this caused extreme performance regressions.
 2017-09-15 14:26:15 -05:00
Subv
23ad87098d Kernel/Memory: Switch the current page table when a new process is scheduled. 2017-09-10 15:14:31 -05:00
Subv
733dfe220e Kernel/Threads: Don't immediately switch to the new main thread when loading a new process. 
This is necessary for loading multiple processes at the same time.
The main thread will be automatically scheduled when necessary once the scheduler runs.
 2017-08-21 20:54:29 -05:00
Yuri Kunde Schlesner
c27dad4cd1 ResultVal: Remove MoveFrom() 
Replace it with std::move(result_val).Unwrap(), or Foo().Unwrap() in
case you already have an rvalue.
 2017-06-18 19:03:15 -07:00
Yuri Kunde Schlesner
ecfda5317e Kernel: Move HandleTable to a separate file 2017-05-29 17:34:39 -07:00
Yuri Kunde Schlesner
467545ed48 Kernel: Centralize error definitions in errors.h 2017-05-24 21:06:00 -07:00
Subv
a81290ffb4 Threads: Check the process' resource limit for the max allowed priority when creating a thread and remove the priority clamping code. 2017-01-11 16:38:05 -05:00
Subv
fbe090645c Thread: Added priority range checking to svcSetThreadPriority and removed priority clamping code from Thread::SetPriority. 2017-01-11 16:38:04 -05:00
bunnei
961bb24cf9 Merge pull request #2410 from Subv/sleepthread 
Don't yield execution in SleepThread(0) if there are no available threads to run
 2017-01-06 22:01:33 -05:00
bunnei
cff8e614bd Merge pull request #2408 from Subv/priority_boosting 
Kernel: Removed the priority boost code for starved threads.
 2017-01-06 00:40:39 -05:00
Subv
6c6117868a Kernel: Don't attempt to yield execution in SleepThread(0) if there are no available threads to run. 
With this we avoid an useless temporary deschedule of the current thread.
 2017-01-05 19:11:34 -05:00
Subv
975f3e0853 Kernel: Remove some unused functions. 2017-01-05 13:17:06 -05:00
Subv
d27ef4a5d3 Kernel: Removed the priority boost code for starved threads. 
After hwtesting and reverse engineering the kernel, it was found that the CTROS scheduler performs no priority boosting for threads like this, although some other forms of scheduling priority-starved threads might take place.

For example, it was found that hardware interrupts might cause low-priority threads to run if the CPU is preempted in the middle of an SVC handler that deschedules the current (high priority) thread before scheduling it again.
 2017-01-05 13:12:39 -05:00
Subv
a0ae8f7c26 Kernel: Add some asserts to enforce the invariants in the scheduler. 2017-01-05 09:40:18 -05:00
Subv
3ce2c24665 Kernel: Remove Thread::wait_objects_index and use wait_objects to hold all the objects that a thread is waiting on. 2017-01-05 09:40:14 -05:00
Subv
bcad1d6f12 Kernel: Use different thread statuses when a thread calls WaitSynchronization1 and WaitSynchronizationN with wait_all = true. 
This commit removes the overly general THREADSTATUS_WAIT_SYNCH and replaces it with two more granular statuses:

THREADSTATUS_WAIT_SYNCH_ANY when a thread waits on objects via WaitSynchronization1 or WaitSynchronizationN with wait_all = false.

THREADSTATUS_WAIT_SYNCH_ALL when a thread waits on objects via WaitSynchronizationN with wait_all = true.
 2017-01-04 15:58:50 -05:00
Subv
8503e56689 Kernel/Mutex: Propagate thread priority changes to other threads inheriting the priority via mutexes 2017-01-04 15:58:48 -05:00
Subv
4e6369d41d Kernel/Mutex: Implemented priority inheritance. 
The implementation is based on reverse engineering of the 3DS's kernel.

A mutex holder's priority will be temporarily boosted to the best priority among any threads that want to acquire any of its held mutexes.
When the holder releases the mutex, it's priority will be boosted to the best priority among the threads that want to acquire any of its remaining held mutexes.
 2017-01-04 15:58:46 -05:00
Subv
90570c153b Kernel: Object ShouldWait and Acquire calls now take a thread as a parameter. 
This will be useful when implementing mutex priority inheritance.
 2017-01-04 15:58:45 -05:00
bunnei
d445aad022 ThreadContext: Move from "core" to "arm_interface". 2016-12-22 00:27:49 -05:00
bunnei
8cfd0762fd core: Replace "AppCore" nomenclature with just "CPU". 2016-12-22 00:27:46 -05:00
bunnei
5d22844f3e core: Remove HLE module, consolidate code & various cleanups. 2016-12-21 23:48:13 -05:00
bunnei
d504f6cf08 core: Consolidate core and system state, remove system module & cleanups. 2016-12-21 23:29:13 -05:00
wwylele
c62bc4e616 Thread: remove the thread from the thread list when exiting 2016-12-17 19:23:52 +02:00
Subv
7066deff78 Properly remove a thread from its wait_objects' waitlist when it is awoken by a timeout. 2016-12-10 13:29:31 -05:00
Subv
5bc10a74f6 Threading: Reworked the way our scheduler works. 
Threads will now be awakened when the objects they're waiting on are signaled, instead of repeating the WaitSynchronization call every now and then.

The scheduler is now called once after every SVC call, and once after a thread is awakened from sleep by its timeout callback.

This new implementation is based off reverse-engineering of the real kernel.

See https://gist.github.com/Subv/02f29bd9f1e5deb7aceea1e8f019c8f4 for a more detailed description of how the real kernel handles rescheduling.
 2016-12-03 22:38:14 -05:00
Ricardo de Almeida Gonzaga
07fdcf150d Fix typos 2016-10-20 12:26:59 -02:00
wwylele
8b25c12ce8 implement wait tree widget 2016-09-22 13:52:52 +08:00
Yuri Kunde Schlesner
fa5d9d8266 Use negative priorities to avoid special-casing the self-include 2016-09-21 00:15:56 -07:00
Emmanuel Gil Peyrot
1138ec0d49 Remove empty newlines in #include blocks. 
This makes clang-format useful on those.

Also add a bunch of forgotten transitive includes, which otherwise
prevented compilation.
 2016-09-21 11:15:47 +09:00
Yuri Kunde Schlesner
1e4a5da9f4 Manually tweak source formatting and then re-run clang-format 2016-09-18 21:14:25 -07:00
Emmanuel Gil Peyrot
628ed4376a Sources: Run clang-format on everything. 2016-09-18 09:38:01 +09:00
bunnei
acdc361fc0 arm: ResetContext shouldn't be part of ARM_Interface. 2016-09-15 17:49:30 -04:00
Yuri Kunde Schlesner
6bc2f3e2a8 Merge pull request #1869 from wwylele/dont-be-lazy 
Switch context to the same thread if necessary
 2016-06-28 21:03:52 -07:00
wwylele
1cef298ca9 Thread: update timeout when rerunning WaitSynch 2016-06-04 09:27:16 +03:00
wwylele
5e5f9b099a Switch context on the same thread if necessary 2016-05-30 07:34:53 +03:00
MerryMage
0352176f4c Kernel/Thread: Remove use of Memory::GetPointer 2016-05-21 11:14:11 -05:00
Jannik Vogel
f39adfffe7 Set fpscr for new threads 2016-05-17 08:59:52 +02:00
bunnei
1302ffa822 Merge pull request #1695 from Subv/tls_alloc 
Kernel/Threads: Dynamically allocate the TLS region for threads.
 2016-05-12 21:51:35 -04:00
Subv
d9baef11f2 Kernel/Threads: Dynamically allocate the TLS region for threads in the BASE region of the linear heap. 
Each thread gets a 0x200-byte area from the 0x1000-sized page, when all 8 thread slots in a single page are used up, the kernel allocates a new page to hold another 8 entries.

This is consistent with what the real kernel does.
 2016-05-07 10:18:47 -05:00
Lioncash
76f892ebb9 hle: Get rid of global access to g_reschedule 
This shouldn't be directly exposed if there's already a partial API that operates on it.
We can just provide the rest of that API.
 2016-03-21 02:57:12 -04:00
Subv
a2c2b28b54 SVC: Fixed ArbitrateAddress to behave as it does on hardware. 
This was verified with hwtests that i plan to upload later on.
 2015-12-27 18:44:42 -05:00
Yuri Kunde Schlesner
5bed732b03 Kernel: Implement svcGetSystemInfo 
This makes smealum/ctrulib@b96dd51d33 work
with Citra.
 2015-11-30 19:49:44 -08:00
Rohit Nirmal
c157d4ddd6 Silence -Wsign-compare warnings. 2015-10-06 22:16:15 -05:00
Yuri Kunde Schlesner
00e9d19f28 Kernel: Implement svcGetProcessInfo in a basic way 
This also adds some basic memory usage accounting. These two types are
used by Super Smash Bros. during startup.
 2015-08-16 01:03:48 -03:00
Lioncash
dfb424b6d1 dyncom: Rename armdefs.h to armstate.h 2015-07-25 22:10:44 -04:00
Subv
275aaeef9c Kernel/Scheduling: Clean up a thread's wait_objects when its scheduled. 
They'll be reset if needed during the next svcWaitSynchronization call (if there's any pending)
 2015-07-20 17:15:54 -05:00